Mount Vinson above the lower ridges of the Vinson Massif, seen from a Twin Otter. Antarctica

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Hiking in the Patriot Hills as part of the Antarctic Experience. West Antarctica

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Susan Detweiler checking out a small tabular iceberg near Cape Archer. Left to right on skyline are Haystack Mountain, Mt. England, the Gonville and Caius Range, the Clare Range, The Carr Plateau (closer, Mt. Marston and Doublefinger Peak). The MacKay Glacier Tongue, Point Retreat & Cape Archer are visible at sea level.East Antarctica.

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Snow capped False Cape Renard, also known as Una's Tits, at the north end of the Lemaire Channel. Antarctica

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The ice cliffs of the Brunt Ice Shelf, and moon lit by the faint glow of the absent sun. Antarctica.